Shoe bottom coating machine



Nov. 30, 1937. w MacKENzlE 2,100,341

SHOE BOTTOM COATING MACHINE Filed Nov. 24, 1934 5 Sheets-Sheet 1 Figi.

Nov. 30, 1937. w, L. MacKENzlE SHOE BOTTOM COMING MACHINE 5 Sheets-Sheet 2 Filed Nov. 24, 1934 Nov. 30, 1937. w. L.. MacKl-:NZIE

SHOE BOTTOM COATING MACHINE Filed Nov. 24, 1934 5 Sheets-Sheet 3 Nov. 30, 1937. w MacKENZlE 2,100,341

SHOE BOTTOM COATING MACHINE Filed Nov. 2A, 1934 5 Sheets-Sheet 4 #W5/WDM- NOV. 30, 1937. w. L MaCKENZlE 2,100,341

SHOE BOTTOM COATING MACHINE Filed Nov. 24, 1934 5 Sheets-Sheet 5 @aal-i Wflwmm @.24

Patented Nov. 30, 1937 SHOE BOTTOM COATING MACHINE Wilbur L. MacKenzie, Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J.', a corporation of New `Iersiey Application November 24, 1934, Serial No. '154,648

38 Claims.

This invention relates to coating applying machines, being principally concerned with Amachines of the extruding type. It is herein illustrated as embodied in a machine particularly adapted for applying a coating to the bottom of .a shoe prior to the application of a sole thereto. i

In the manufacture of compo shoes, the sole of the shoe is secured to the overlasted upper and, it may be,to other portions of the shoe principally by an interposed coating of adhesive which, for ease of discussion, will hereinafter be termed cement. Commonly, this cement is of the pyroxylin type, is quite viscous and tends to be quick dr ing, and a marginal stripe is applied tothe bo tom of the shoe. In many shoes, this stripeA will lie upon the overlasted margin of the upper. If the compo shoes are of the welt type, then the cement will be applied to the outwardly extending welt and to the adjacent inseam 'or between substance. The problem of applying a coating to the particular surfaces in question is rendered extremely dilcult by the nature of those surfaces.` In compo shoes Whichhave no welt, the margin of the overlasted upper is rarely at and in many portions is wrinkled and creased. Furthermore, the prole of the bottom surfacey of a shoe is not regular andv the relation of the bottom surface to other parts of the shoe varies markedly according to the style of the shoe and theshape of the last. If the application of cement is to the welt and inseam, as in compo welts, then the fleshl surface of the welt is rough, the inseam has many crevices and may not have been trimmed evenly, and the welt is flexible and frequently curves heightwise out of the plane of the adjacent bottom of the shoe.

An object of the present invention is to providel an improved coating applying machine by means of which coating material may be applied in predetermined quantities per unit of area coated and may be positioned upon the uneven surface inherently involved in this kind of work accu-v rately and with such a high degree -of continuity 168, filed July l1, 1936, in my name and it is largely by reason of the construction and arrangement of this'nozzle that the problems relating to continuity, uniformity and the ability to locate the coating in apredetermined position have been solved. In the illustrated machine,

thenozzle is supported for heightwise yielding.

movement and is inclined .downwardly and yforrwai-diy `so that the outlet end of the nozzle eic- (cl. ia-so) tends in the general direction of forward movev ment of the work and rides on the work. Preferably and as illustrated, the-nozzle has a resilient tip portion capable of yielding and twisting, and which may be kept in firm contact ywith the irregular, unevensurface to be coated, avoiding the danger of a lateral spreading of the coating material and assisting in leaving a deposit upon l the-work which is of a uniform thickness. A feature of the invention resides in members associated with this nozzle to control its deection, under -pressure of Work presented to it, laterally and heightwise.

The application of a uniform quantity of coating material to apiece of work by means of yan extruding nozzle presupposes a relative moveinvention resides in a machine having an improved feeding mechanism embodying a driven feed wheel mounted for contact with the side of the shoe, and supported for movement bodily toward and away from the side of the shoe. The illustrated machine being provided with a depending nozzle, a shoe presented thereto is held in the hands of the operator in inverted position and is, turned to applyl successive portions of the margin of the bottom of the shoe to the nozzle. Lateral movement of the feed wheel toward andy away fromthe shoe enables the-feed wheel to be kept away from the nozzle during .periods when no shoe is presented thereto, thereby avoiding danger of. soiling the feed -wheel and, hence, transferring some coatingmaterial to the side of the shoe. It will also be readily understood that the curvature of4 the, undercut shank portion of the shoe is markedly ydifferent from the curvature of the side of the shoe at the heel ory at the toe portion. To meet this situation, the feed Wheel is mounted for movement by the operator outwardly to a ilxed position, is normally firmly heid in that position but is permitted to yield inwardly toward the machinek in order to accommodate the varying curvatures of the sides of a shoe as it is turned about beneath the nozzie. Provision is made, moreover, for driving the'f feed wheel in all positions and, in the case of that form of the machine which is particularly designed for the coating of compo welts, the mounting is such that the movement of the-feed wheel. is a straight line movementli -substantially a horizontal path. Provision is cordance with other features so made. in acf the invention,

15 moved out.

so that the movement of the feed wheel into operative engagement with the shoe precedes the opening of the valve which allows the extrusion of coating material and, vice versa, the closing of the 'valve precedes the withdrawal of the feed wheel, thus giving still further protection against accidental disposal of coating material `upon the feed wheel. v

Support of the welt in firm engagement with thev end of the nozzle is accomplished, in accordshown in the accompanying drawings, in which- Fig. 1 isa side elevation of the head of the machine With a side cover removed;

Fig. 2 is a front elevation of the head of the machine Fig. 3 is a view smmar to Fig. 1 of a modified form of the machine designed particularly for applying cement to the bottoms of shoes which have no welt;

Fig. 41s a fragmentary view showing the nozzle ,3 and the feed wheel of the machine of Fig. 3 in engagement with a portion of a shoe; e

Fig. 5 is a view on a much larger scale showin a portion of a welted shoe in section, together with the operating parts of the form of the machine shown in Figs. 1 and 2 which cooperate therewith;

Fig. 6 is a fragmentary view showing a substantially vertical sectionon theline VI--VI of Fig. 5, .this being taken substantially axially of the nozzle and showing the deection of the tip of the nozzle as the work is brought into contact withA it;

Fig. 7 is a fragmentary view showing the nozzle of the machine pressed against the bottom of a shoe having a spring heel lift;

,-Hg. 8 is an angular view of a portion of the bottom of a welted shoe showing a nozzle resting upon the butt end-of the welt ready to apply coatingA thereto;

Fig. 9 is a detail view showing the tip of a nozzle 5 riding `on the bottomy of a shoe adjacent to a ridged shank piece; I

Fig. 10 is an enlarged angular view of the tip of a nozzle designed particularly for the bottoms of shoes which have no welts;

u Fig. 11 is an enlarged detail angular view of a welt supportingfinger; Y Fig. 12 is an enlarged section through the end of a nozzle such asis shown in Fig. 10 but in inverted position and on a much larger scale;

Fig. 13 is a longitudinal section through a modified nozzle, and

Fig. 14 is an enlarged.n angular view of the tip of the nozzle shown with the recess facing up.

There is shown principally in Figs. 1, 2 land 5 a machine which nds particular application in applyin'g` a coating, such as of pyroxylin cement, to the margin of the bottom of a welted shoe prior to theapplication of a sole thereto.' The cement 7 'is'extruded directly upon the flesh side of the welt I5 of a shoe which has no welt, prior to the application of a sole thereto. To this end, both forms oi' ythe machine are provided with a nozzle 20 to which a coating material, hereinafter for conveniencetermed cement, will be supplied under pressure bymeans of a pump 22 from a receptacle 24. The nozzle and the pump are connected by a flexible hose 26, and the passage of cement is controlled by a valve 28, the pressure being indicated by a gage. The pump 22 comprises a pair of intermeshing gears 32 (Fig. 1) and a bypass ball valve 34 (Fig. 2) heldin position under the pressure of a spring 36, the compression oi which may be adjusted by a hand screw 3B. When the compression of the spring is increased, the pressure in the hose 26 is increased and more cement will be applied to each unit area ofthe margin to be coated. The' gears 32 are seated in a chamber formed as a recess 40 in the 'end of a casting 42 through which there is a passage 44 (Fig. 2) leading to the receptacle 24. One of the gears 32 is mounted on a shaft which passes through this block and through a stuffing box at the far end, and is driven by gears 46 from a driving shaft 48. The by-pass valve 24 is positioned in a removable cover plate 50. The receptacle 24is mounted upon a shelf 52 formed as an integral part of a frame 54 for the head of the machine,this in turn being adapted to be supported upon a column 56. It will be noted that the receptaclev24 is provided with a hinged'cover 58 having an upstanding neck 60 fitted for detachable engagement with the neck of ,a supply can 62, as shown in Fig. 1. Lugs 64 (Fig. 2) upon the cover 58 contact with the side of the receptacle 24 when the cover is tipped over into a horizontal position so that, in applying a filled can l2, the cover of which has been removed, the upright can may be raised and engaged with the neck Il of the tilted cover, after which the can and the `cover may be tipped back into upright position and the contents of the can allowed to flow into the receptacle 24. Each form of the machine is also provided with a driven rubber-tired feed wheel 10 which is movably mounted, as will be later described, so that it may be retracted to an inoperative position which is not beneath the nozzle and then, at the will of the operator, brought out intov an operative position engaging the side of a shoe, as shown in Figs. 4 and 5, to cause a feeding movement of a shoe held up to the machine in inverted position by an operator.

In general, the arrangement is such that an operator holding a shoe in inverted substantially horizontal position presents that portion oi' the bottom of the shoe adjacent to the heel breast line to the, nozzle and by depressing a suitable treadle (not shown) moves the feed wheel 10 out into contact with the work and also opens the valve 28 to allow a flow of cement through the nozzle.

20. The rotation of --the` driven feed wheel 'Il causes a progressive movement of the shoe and this is guided byy the operator to present to the nozzle the margin of the bottom of the shoe around the toe end thereof back to a corresponding point on the other side of the shoe with the result that there is applied a marginal band `of cement in a predetermined amount. This band may be uniformly, positioned. in spite of the "changing transverse contour of the shoe bottom.

I'he upper part of the frame, as will be evident.

from an inspection of Figs. 1 and 2, comprises upright spacedside pieces 12 and 14, the4 latter of which isseveredat the line 18 so that it forms a removable cover which facilitates the assembling of the machine. Mounted between these plates 12 depending rear' end 82 journaled upon a cross` and 'I4 is a nozzle-supporting arm 80 having a that it may readily be separated and a spring |21 coiled around the rod |22 keeps this universal pivot 84. Along the` forward end of this lever arm are opposed surfaces 86 which slidably contact with the inner adjacent faces of upwardly extending iianges 88 (Fig. 2) upon -the side pieces ofthe frame. Upward tilting movement of this nozzle supporting arm 80 is opposedby a spring 00 received between a lug 32 on thelever anda bracket 84 secured to the frame member 12 (Fig. 2). 'Ihe normal lowermost position of the arm 80 is determined by means of a Vscrew 96 (Figs. 1 and 2) threaded ina flange 98 upon the lever and contacting with a iiange 88 upon the side piece 12 of the frame. `By adjusting this screw, the heightwise relation of the nozzle with respect to the feed wheel 10 may be adjusted to bring the nozzle as' close as is practical to the wheel. This done, the

inward yielding. movement of the feed wheel as it comes to the inside shank bekept ataminimum. A

The nozzle 20 which, as will be later described in greater detail, may be constructed of yielding material, such as soft rubber, is held upon the lower end of a hanger |00 by a clamp plate |02, this arm being held in the desired angular position upon a-.supporting rod |06 attached to the arm 80- by means of pinch screws |04 (Fig. 2) passing through asplit portion ofthe arm. -It is intended that the operator of the machine shall face the side of the machine illustrated in Fig. 1 and present the shoe to the lower end of the nozzle 20 and to contact with the feed wheel 'I0 at substantially its outermost point. This point serves as a turning point for the work. If, as sometimes occurs. the habits of an operator are such that he portion of a shoe will vbrings the shoe into contact with the feed wheel at one side or the other of this point, then it is possible to make a corresponding adjustment of the position of the lower end of the nozzle, to bring it adjacent to the turning point, by loosening the pinch screws |04 and turning the hanger |00 upon the supporting rod |06, and then reclamping the arm. This correction will keep the band of cement'parallel to the edgeof the shoe. The rod |86 is mounted for axial adjustment in the outer end of the arm 88 and is held in position and prevented from turning by the cooperation of the pointed end o'f a set screw |08 with a V-shaped tubular extension ||8 over the lower end of which groove ||0 in the rod. By loosening-this screw l' |08,l the nozzle may be moved in and out to vary its location with respect to the corner of the shoe, thus allowing the band of cement to be located exactly at the edge of the bottom margin or to be spaced therefrom by an'uncoated margin.

Associated with the valve 28 is a fitting ||2` (Figs. 1 and 2) which is screwed to a plate ||4 and this plate is mounted upon spaced fingers I6 which are integral with the hanger I 00. Formed as a component part of. this structure is a metallic the upper end of the nozzle 20 is forced. 'I'he arrangement recited provides .a tight passageway from the flexible hose 26 to the nozzle 20. Operation of the valve itself is secured by actuating a valve arm |20 secured to a valve rod |22 which is journaled in a depending flange |24 formed in- I `tegi'ally with the arm 80. Inasmuch as the nozzie-supporting hanger |00 is capable of angular adjustment around the rod |06, provision is made for avoiding any binding Aof the connection between the valve 28 and the operating rod |22 by interposlng a section |26 joined to the valve and the rodrespectively by means of universal joints. A part of one of these universal joints is forked so Feed of the work by the driven rubber-tired feed wheel 10 is greatly facilitated by the fact that Athis wheel is movably mounted and yieldable to accommodatevariations in the contour of the shoe or resulting from the different ways in which operators present shoes to the machine. As shown in Fig. 1, the feed wheel 10 is .iournaled in a movable carrier |30-and this carrier in turn isV supportedupon pivoted links |32 and |34 turning on shouldered cross bolts |33 and |35 extending between the frame sides 12 and 14 (Fig. 2) The feed wheel carrier |30 is, therefore, movable in and out substantially in a straight line which is a horizontal path. To drive the feed wheel, the carrier is provided with a shaft |36 interconnected by means of miter gears and a short intermediate shaft withl a gear |38 (Fig. 5) on the feed wheel '|0. The shaft |36 is connected to a shaft |40 journaled in the frame by means of a telescoping shaft |42, |44 .which is joined to the shafts |36 and |40 by means of universal joints. and worm wheel |46 interconnects the shaft 40 with the drive shaft 48. It will be observed from Fig.v 2 that the carrier |30 iits snugly between the inner faces of the side plates '|2 and 14 of the frame thereby to guide the ca er in its movement. The limit of outward trolled by a stop screw |50 (Fi 5) which cooper- A worm ovement is conates with a vertical surface |52 on the carrier.

lateral movement of the feed wheel to take it away from the nozzle also greatly facilitates the presentation of a pie'ce of work to the machine as it enables the operator to tilt the shoe to such an angle to the horizontal that the butt end of the welt can be placed over the finger 68 in the inoperative position of the latter which is shown in Fig. 1.

Operation of the feed wheel carrier |30 under ithe control of the operator is effected by means of a treadle (not shown) normally held up by a spring (not shown), which treadle is connected to a treadle rod |54 (Fig. 1) having collars |56 and |58 held thereon lby set screws. Interposed between these collars and slidable on the rod is a sleeve |60 held normally in engagement with the lower collar by a spring |62. This sleeve has alaterally extending pin |64 received in a slot in an arm |66 which is joined with the arm |34 to make a bell crank. When the treadle is depressed, the carrier |30 and the feed wheel 'I0 are moved out into engagement with the work to a position limited by the stop screw |50. If the operator pushes inwardly upon the feed wheel as he guides the shoebeneath the nozzle, the spring |62 will yield to permitj-this inward movement of the feed wheel while maintaining it yieldably in contact with the shoe. ment of the treadle rod |54 is suicient tocarry the lower collar |56 away from the sleeve |60 when the stop surface |52 contacts with the The movei.

screw |50. The treadle rod is interposed between the side frame plates 'I2 and '|4, and passes down through the interior of the column 56.

For operation of the valve arm |20, the treadle rod is pivotally joined at its upper'end to a lever |10 which is mounted on the shouldered crossA bolt|12 extending between the sides of the frame. This lever |10, therefore, serves as a. guide for the upper end of the treadle rod and is `ioined to a pin |18 by a link |14 *srlgtted at its lower end. This pin |16, held by a set screw, passes between the spaced arms |18 and |80 of a lever pivoted at |82 between the sides of the frame. 'I'he length'of--the slot in the link |14 is about half the length of the normal movement of the treadle rod |54. The longer arm |80 of the lever is connected by a rod |84 with the valve operating arm |20 while the other arm |18 has attached to it the lower end of a spring |86, the upper end of which is hooked over an eye in the nozzle-supporting arm 80. This spring |86 tends normally tc lift the double lever |18, |80 and to close the valve 28.

In the form of the invention used when the shoe has no welt and shown in Fig. 3, the feed l wheel 10 can, for reasons which will be later explained, approach the nozzle at a sharper angle and this enables a simpler feed wheel carrier |80 to be utilized. The lower end of this carrier is pivoted upon the bearings for the drive shaft 48 and the feed wheel is driven from a stub shaft.

|82 connected to a shaft |84 extending heightwise of the carrier and joined to the drive shaft by a worm and worm wheel |461. Here, astop flange |86 is provided upon a slide |88 received in a groove |88 in the side frame 12 and adjustably positioned therein by means of a clamp screw. This flange |86 cooperates with an upstanding finger 200 on the upper end of the carrier |80 when the carrier has been swung out- ,1 nected to the upper end of a bell crank 204 pivoted on the cross bolt |85, the lower arm of which is forked to receive the treadle rod I 54. A spring 206 surrounding the treadle rod and held in position by a collar 208 bears at its lower end upon a washer 2`|0 resting upon a curved surface on the forked end of the lower arm of the bell crank 204.

. yielding-movement of the feed wheel under pressure of the work, as does the spring |62 in the form of the machine shown in Fig. 1. A spring 2|2 is interposed between thev frame and the carrier |80 to retract the carrier after the treadl l rod has been released. 1

The feed wheel 10 comprises a hub 2 |4 (Fig. 5) on the lower portion of which is formed the miter gear |38 and the upper portion of which is. provided with a V-shaped peripheral groove to receive a rubber ring 2|6 which isv rounded upon its outer periphery and is V-shaped on its inner periphery. The hub 2|4 is mounted for rotation upon the enlarged portion 2|8 of a screw 220 which is'threaded into the carrier |30. An

upstanding flange 222 on this carrier 80 is received within a recess in the miter gear |38 to steady it. It is noted that the upper portion of the hub 2| 4 is recessed at 224 to avoid interference with the welt supporting finger 68.

When the machine is to be utilized for the application of a coating of cement, for example,

to the attaching surface of a welt 280 which will -the nozzle.

This spring 206 permits an inwardV tached to the upper 282 and-to an insole 284 by means of a seam ,280. This seam passes not only through the upper 282 but also through the lining 238 of a shoe, which has been built upon a last 240, and through the between substance 242 of the channeled insole. At this stage of the manufacture of the shoe, a filler 244 will usually have been applied to the exposed surface of the insole. 'I'he desire of the manufacturer is to apply a marginal stripe of cement which will coat the whole width of the attaching surface of the welt 230 and the between substance 242. Usually the machine will be regulated to extrude the cement in a-quantity suiilcient to not only coat the welt but also to ll the interstices formed by the inseam stitches 236 or between the edges of the upper, lining and between substance.

It is important that, during intervals between the presentation of pieces of work to the machine, the welt supporting linger 68 should occupy an inoperative position which is away from the tip of the nozzle 20 to avoid soiling this finger with cement. desirable to present a welted shoe to the nozzle by pushing the butt end of the welt into the tip of Such a procedure would result frequently in wiping oil a small quantity of .cement upon the butt of thewelt which would be carried over on to the grain side thereof and the upper, and where it would be apt to damage the appearance of the completed shoe. To avoid the first difficulty, the welt supporting finger 68 is mounted for movement toward and away from the nozzle and to avoid the second difllculty, the finger is given a combined motion loi rotation and translation which allows the butt of the welt to be laid over the finger in its inoperative position and then causes the movement of the finger to carry the work forwardly and outwardly so that the nozzle shall, in its starting position, occupy a position similar to that shown in dotted lines in Fig. 8 and its point ofcontact with the work shall be carried along a path 258 whichis substantially a portion of an ellipse thereby'bringing the nozzle laterally over the butt end of the welt intothe position shown in full `lines in Fig. 8 without any opportunity for wiping of! cement upon the -end of the welt.

Accordingly, the finger 68 is carried upon the lower end of a shaft 252 which is journaled in an extension 254- of a slide 256. It will be seen from Figs. l and that the axisof this shaft 252 is inclined to the vertical. From Fig. 2 it will be V seen, however, that the axis is substantially in the same plane as the axis of the feed wheel so that. when the finger is brought into operative position, it will lie in that plane. The shaft 252 is held in the extension 254 by means of a collar 258 andI a toothed segment 260 which latter is held in'position ,upon the upper end of the shaft by a set screw 262. The toothed segment 280 meshes with a rack 264. 'This rack is supported in the groove |88 in the side frame 12 and is adjustably positioned by means of a bolt 261 passing through a slot therein. This groove |88 (Fig.

1) is the same as that which, in the form of theA machine shown in Fig. 3, receives the bar |88 carrying the stop flange |86. 4The slide 256 has slots 268 to receive and be supported by the enlarged portions of shouldered bolts 210 extending between the side frames 12, 14 and clamped therein. These bolts,` as' well as various other n has been found also that it is not bolts used as pivots (|33, |35, |12, |82), serve to keep the side frames in a predeterminedspaced relation such that they may cooperate with the feed wheel carrier |30 to guide the latter. Movement is imparted to the slide 256 by a link 212 (Fig. 1) joining the slide with the outer end of the lever |10 to which the treadle rod is connected. Upon depression ofthe treadle rod, the slide 256 i`s moved outwardly thereby imparting a movement of translation to the shaft 252 carrying Vthe finger 69.- -At the same time, the meshing of the segment 260 with the rack 264 imparts a partial rotation to the finger-carrying shaft. At the beginning of this movement, the finger 69` lies, when viewed from above, at an angle of approximately 45 to the path of the work, which path may be taken to be substantially normal'to the sheet of the drawing at a point beneath the nozzle. When the slide 256 has been moved to the full extent of the movement imparted by the lever |10 through the link *212, the ilnger will have been rotated by the shaft 252 to occupy a position s"bstantially at 90 to the length of the path ofthe work. At the time when this movement is completed, the boss 213 upon the lever |10is brought into contact with the stop surface 215 on the s ide member 12 of the frame.` At this time, thetoggle formed by the lever |10 and the link 212 will be slightly beyond the dead center and will, therefore,"act as a rigid strut holding n the slid25l in'its outermost position. It will be noted that, by reason of the lost motion connection |16 between the link |14 and the lever |18, |86, a depression of the treadle rod |54 rst. moves the welt gage 69 and thefeed wheel 10 out into operative position and then opens the valve 28. When'the treadle isfreleased and the rod |54 raised by the spring |86,` then the actions take place in the reverse sequence and the valve 28 is closed before the welt gage and feed wheel are withdrawn. This aids in preventing a deposit of cement upon these work contacting parts of the machine.

The upper face of the linger 69 supports a combined welt gage and nozzle rest 214 (Figs. 5 and 11). This gage 214 has a slotted flange 216 allowing the gage to be adjustably positioned upon the finger 69 and clamped there by a screw 218. The gage is centered upon the finger by means of (a depending tongue 280 received in a slot 282 running lengthwise of the finger. 'I'his gage 21| has an extension 28| of a reduced thickness which is approximately the same as that of the welt, and which has an edge 286 which, in operative relation as shown in Fig. 5, abuts the edge of the welt and acts as a gage for'the welt. It will be understood-however, that it is intended that the finger 69 shall be seated in the bottom of the welt crease and that thisA extension 284`of the gage serves also as a support'for the edgeof the nozzle, as will be later described. A

The successful operation of the machine deperds to a considerable degree upon the construction cf the nozzle 20. The work to be coated is of irregular-contour both laterally and heightwise of the shoeand provides a relatively rough surfacetc whichA cement may be applied uniformly only with considerable difficulty. For such work. the improved' construction ,herein shown and described provides a nozzle which may be made of relatively flexible material, such as soft rubber. and by .means of which a controllable duan'ity of cement may be applied with great regularity and in a uniform manner. 'I'his nozzle comprises a hollow body portion 300 (Fig. 6) having a large passage 3M which receives the tubular extension I8 extending downwardly from the v bottom of the plate HI and'atan acute angle thereto (Fig. 2). The flattened end of the nozzle is reduced in thickness as at 302 (Fig. 10) and slightly in width (Figs. 1 and' 5) so that it may be flexed from a position in which it lies substantially symmetrical with respect to the center plane of the body 300 .to a position, such as is shown in Figs. 6, 8 and 9, in which the tip 30,4 is

bent at a decided angle to the body 300. This tip 304 is .provided with a. substantially U-shaped, open-ended recess 305 defined laterally by the inner faces 308 (Figs. 10 and 12) of side flanges 308 and by an inner, end surface 3|0 (Fig. 6). 'I'he open side of the recess is positioned adjacent to the work and as the work travels with respect to the nozzle, the direction of feeding movement is away from the open end of the re- .cess so that the recess is open at the forward end of the nozzle tip, thereby permitting the deposition of a band of cement. Depending upon the quantity of cement extruded, as determined by the setting ofthe screw 38 (Fig. 2), this will leave parallel stripes or -a single band of cement` of uniform character, the width of which will be determined by the space between the side flanges 308. Minute passages 3| 2 (Fig. 6) lead from the interior of the body portion tol the inner corner of this recess. These passages are preferably of such a size that they are capillary'and, therefore, function like the capillary tubes employed in the nozzlefshown in LettersPatent of the shape like that of the passages 3|2, shown much enlarged in Fig. 12. Conveniently, too, these rods are extended to the extreme end of the :nozzle and two sides of each rodare utilized to form V-shaped grooves 3|6 separated by V-shaped ribs- 3 I8. In the use of the nozzle, these ribs/M8 rest upon the work, as indicated in Figs. 6, 8 and 9, and prevent the open end of the recess 305 from being closed by the pressure of the work against the nozzle. The tip ofthe nozzle serves also as a wiper or spreader by which the applied coating is rubbed-into the work and evenly distributed in the direction of the length of the applied band. Preferably, the spacing of the V-shaped ribs is such that the grooves formed therebetween will be completely lled with cement at the particular pressure applied, thus insuring a good contact of the cement with the work without too much pressure bythe nozzle on the work. It has been found that too wide a spacing of these ribs tends to produce stripes of cement upon the work, which stripes, though they may be very slightly separated when Aoriginally applied, are

of sufficient body so that theytend to shrinkl away from each other and to leave markedly separated stripes, a condition which is not usually desirable. A spacing between the ribs of 'one-twentieth of an inch has been found to be suitable. The nozzle rests upon the work at a point on the nozzle which, for convenience, will be termed the heel 320 (Figs. 6 and 7) of the nozzle and at its extreme tip 322. 'I'here is, accordingly, opportunity for the cement. to completely surround the ribs 3|8 at the inner part parallel stripes, for example.

of me recess m and thus to iubncm these ma to such an extent that wear upon them is substantially eliminated. To secure adequate contact between the tip of the nozzle and the work, the tip I is provided on its upper face with a series of parallel reinforcing ribs 324 (Figs. 8 and 10). When the nomle is to be used for welt ce-l 1000 has been added. If the nozzle is to'be used',

for shoe bottoms of compo shoes of the type illustrated at M in Fig. 9, then it is found desirable to interconnect the ribs 324 by means of a transverse rib 328 (see also Fig. l0) formed integrally with the tip of the nozzle to prevent undue distortion and to keep the V-shaped ribs IIB near the center of the outlet end of the recess from being pressed so firmly against the work as to divide the resulting band of cement into spaced The spreader action of the tip of the nozzle has been found to be of considerable advantage in the elimination of bubbles in certain types of work. The reason for these bubbles is not fully understood. They may result from the fact that in very rough work the coating of cement bridges a small pocket containing air.' This air may then interact with the material of the cement to form a greater quantity of gas which expands thev layer' of cement andmakes a protruding bubble. Such bubbles either harden as protruding lumps or else burst and form ldistinct crater rims which protrude from the work and are a hindrance in securing perfect adhesion between the shoe parts.

applied band of cement, then a satisfactory lob results. 'If there is any tendency to imperfect adhesion at this point, then it does not make much difference how much cement may have been applied to the inner edge of the margin because the sole will break away from the shoe at the outer edge. The machine herein illustrated is of decided utility because of itsinherent action in applying a band of cement to the margin of a shoe which will be of full thickness at the outer edge without being so thick as to cause squeezeout" and the consequent danger of soiling the upper. The nozzle construction appeals to operators as no time is required for cleaning the machine when it is left for the night. It is simply necessary to smear a quantity of cement over the recessed end of the nozzle and to allow it to harden' thereon, preventing any cement in the passages of the nozzle from drying out. When the machine is again desired yfor use, the operator needs only to distort the tip of the nozzle, breaking away the hardened cement and leaving the nozzle in condition for immediate use.

For some classes of work, such as those in which there are abrupt changes of heightwise contour, it

is found desirable to provide a skid finger nl which is heldv by a set screw in'a nozzle clamp Illa, (Figs. 4 and '1). This is particularly useful in a shoe of the type shown in Fig. 'I having a springheel lift 332 and a welt 23| and in which it is desired to apply cement around the margin of the heel end of the shoe as well as around the forepart. The skid 33| riding over the corner formed by the breast edge of the lift will raise the nomic supporting arm 00 and facilitate the passage of the nomic over this corner. The skid III alsoserves to determine the amount which the nozzle may be bent by the upward pressure of a piece of work against the end of it. If the nozzle is not bent sufficiently, the heel 320 of the nozzle will not be brought into contact with the work and the cement will be extruded, uncontrolled, upon the portions of the work which are approaching the nomle and will very likely spread laterally beyond the desiredlimits. If, on the other hand, too much pressure is applied, the tendency wi11 be to cause the extreme tip end of the nozzle to tilt upwardly away from the work so that the full wiping action of the latter is not secured and the band will be wider than desired. It has been found in the particular construction herein illustrated that a setting of the skid finger 330, such that. in the undistorted condition ofthe nomle, 'thend of the skid is spaced from the surface Ill at the inner end of the recess by one-sixteenth of an inch. measured axially along the nome. givesexactly the desired results, as above described. The screw 96 serves to provide an initial adjustment of the height of the nozzle with respect to the level of the welt gage 69 when the machine is being set p, substantially as has been described in connection with the form of the machine shown in Fig. 3.

In the application of cement to welt shoes. as illustrated in Fig. 8, it is usually desired to bring a band of cement all the way to the edge of the welt and, consequently, the inner face #Il of the side flange 308 of the nozzle should coincide with the edge of the welt. This is effected to advantage by allowing the side flange Il. to rest upon the portion 284 of the welt gage 214. This reduces the wear on this flange l", as there is no contact between it and the moving welt. In a'shoe of type M, as shown in Fig. 9, it is quite common to provide a shank reinforcing member 334 which is rigid and has sharply inclined sides. The narrowness of the shank portions of such shoes forces the nozzle to ride on one side of this shank member and has some tendency to cause the tip of the nozzle to diverge outwardly or to slide laterally beyond its intended path. The machine may be provided with a side nger I laving a plate 342 to permit it to be attached to th'e under side of the arm |00 by, av screw l passing through a slot in this plate. The lower end of this nger 340 is curved and lies closely alongside the outer face of the flange 30C-at the outside of the nozzle serving as an abutment ready to support the nozzle when deflected and thereby to avoid this tendency. In the welt machineof Fig. 8, this function is performed by the side of the gage 2N serving similarly as an abutment.

In using the machine to apply cement to welt shoes, the operator stands facing the side of the machine shown in Fig. 1. The direction of feeding movement is directly away from him substantially at right angles to the direction of sliding movement of the carrier 2li (Fig. 5) for the welt supporting finger l0. This finger in an inoperativeposition extends outwardly at about movement.

452 to the line of feeding movement and the nger itself turns upwardly slightly. The shoe presented to the machine is positioned with the y toe toward the operator, it being tipped up slightlyand turned in toward the machine at about 45 to the line of feed. The lower end of the nozzle will then rest upon the bottom of the shoe inwardly of the welt and at a point near the butt of the welt, as shown in dotted lines in Fig. 8. When the treadle is depressed, giving the welt supporting finger an outward and a rotative movement to bring it into the welt crease and to force the shoe outward, the shoe is also turned manually to bring it into the line of `feed and into a substantially horizontal position. The feed wheel does not contact with 'the shoe until the latter is in this position and fully ready for the application of cement. One important result of the arrangement above described is that there is no tendency for the butt of the welt to wipe cement from the lower end of the nozzle when the shoe is being positioned. If it did, it would be highly probable that the cement would work over on to the grain surface of the welt and on the upper, both of which are very detrimental. This is avoided, however, because lthe end of the nozzle is brought into contact with the shoe at a point inwardly of the welt and then, as the shoe is given a combined turning and sliding movement with the welt supporting finger, slides over the bottom of the shoe and the welt in a diagonal direction until it reaches its operative position where it will apply cement to the whole width of the welt but without coating the edge of the welt.

Depression of the treadle in this machine does three things: it moves out the slide 256 carrying the welt support 69, it moves out the feed wheel 'I0 to engage the side of the shoe and it opens the valve 28 to allow cement to ow through the nozzle `20. 'Ihe outward movement of the feed wheel lags behind the movement of the welt supporting finger and the opening of the valve is timed so that no pressure is applied to the residual cement in the nozzle until the work is in proper position beneath the nozzle. This outward movement of the welt finger is carried to a limiting position which is fixed with respect to the nozzle except as the latter may have heightwise On the other hand, the carrier for the feed wheel is moved out to a point where it brings the wheel into engagement with the side of the shoe and in that position is Iyieldable to accommodate variations in the shape of the shoe. This yielding movement of the feed wheel also permits the welt finger always to be fully seated at the bottom of the welt crease. The action of the machine upon shoes having wide variations in heightwise contour at the bottom of the shoe is greatly facilitated by reason of the pivotal mounting at 84 of the nozzle-supporting arm 80, thus allowing the nozzle and its support to be lifted bodily substantially vertically at times for a short distance against the tension of the spring 90. It will be noted that the connection between the rod |84, connected to the valve arm |20, and the actuating arm |80 is close to the pivot 84 so that lifting movement of the nozzle-supporting arm 80 does not affect to any substantial extent the position of the valve 28.

While the machine is employed for compo shoes, such as shown at M (Fig. 4), the form of the machine shown in Fig. 3 will be employed. In this form, there being no welt supporting finger, it is possible to provide a simpler construction of the feed wheel carrier |90 and to mount the feed wheel 10 at a sharp inclination,

bringing it out into contact with the shoe by movement through an arc around the center of the drive shaft 48. This may be contrasted with the arrangement shown in Figs. 1 and 5 in which the inclination of the plane of the feed wheel 10 is reduced toapproximately 30 to the horizontal and the movement of the feed wheel carrier |30 is substantially a straight line, horizontal movement so that there will be no Vcontact between the feed wheel and the elbow of the nger 69. Thus, it is possible to bring the feed wheel closer to the finger by reason of the depression 224 in its upper surface. In either of the machines, whenthe end of the margin of the work is reached, the treadle is released, closing the valve and then, after the interval allowed by the lost-motion connection |16, moving the feed wheel away from the work and, in the case of a welt shoe, returning the welt finger 69 to its inoperative position, as shown in Fig. 1. It will be recalled that the feed wheel 10 is driven continuously. Accordingly, it is desired that the feed wheel 'I0 shall not be brought into contact with a shoe until the shoe is in position ready for the application of cement, as is insured particularly by the arrangement illustrated in Fig. 1.

Having described my invention, what I claim as new and desire-to secure by Letters Patent of the United States is:

1. In an extruding machine, a nozzle mounted on the machine and having a depending flexible work-contacting end portion, and a work-contacting rigid finger mounted adjacent to and to the rear of said nozzle thereby to limit the deflection of the resilient end portion by work raised into contact with the finger and nozzle as the work is moved forwardly beneath the nozzle.

2. In an extruding machine, a nozzle mounted on the machine and having a depending, thin, fiat, flexible work-contacting end portion, and a kdepending rigid member disposed close to the side'of the fiexible end portion of the nozzle to act as an abutment limiting lateral flexing of said end portion.

3. In an extruding machine, a nozzle having a depending work-contacting end portion, a workcontacting skid finger disposed adjacent to and to the rear of said nozzle, and means for supporting said nozzle and skid finger for heightwise yielding movement.

4. In an extruding machine, a nozzle having a flexible depending work-contacting end portion, said end portion having a recess on the workcontacting side thereof, a passage through said nozzle opening into said recess, a work-contacting skid finger disposed closely adiacent to the closed end of said recess, and means for supporting said nozzle and skid nger for heightwise yielding movement.

5. In an extruding machine, a depending flex- 6. In an extruding machine, a frame, a nozzle carrier angular-ly adjustable with respect to the frame, a nozzle on said carrier, a. pipe on the carrier for supplying said nozzle, a valve also fere with the connection between the rod and the valve.

7. In an extruding machine, a, frame., a carrier arm pivotally mounted upon the frame, a nozzle carrier secured to said arm, a nozzle on said carrier, a tube supplying said nozzle, a valve interposed between the tube and the nozzle, a valve rod journaled in the frame, and a flexible connection between said rod and said valve permitting pivotal movement of saidarm without interference with the turning of the valve by the rod.

8. In an extruding machine, a depending nozzle positioned to deliver cement to the bottom of an inverted shoe, a power-driven'feed wheel to contact with the side of the shoe. and treadleoperated means for supporting said feed wheel for bodily movement laterally of the nozzle'toward and away from the nozzle and theside of the shoe.

9. In an extruding machine, a nozzle to which the bottom of a shoe may be presented, a feed wheel for contact with the side of the shoe, a movable support for said feed wheel, means for driving said feed wheel in all positions of the support, and operator-controlled means for moving said support.

10. In an extruding machine, a nozzle to which the bottom of a shoe may be presented, a feed wheel for contact with the shoe, a movable support for said feed wheel, means for driving said feed wheel in all positions of the support, and operator-controlled means, including a spring, for moving said support to carry the feed wheel into yielding contact with the shoe.

11. In an extruding machine, a nozzle, a feed wheel, a carrier for said feed wheel mounted for movement laterally toward and away from' the nozzle, an adjustable stop for limiting the movement of the feed wheel toward the nozzle, and operator-controlled means for yieldably moving said feed wheel support.

12. In an extruding machine, a depending nozzle, a drive shaft below the nozzle, a feed wheel driven from said shaft and movable laterally toward and away from the side of an inverted shoe presented to said nozzle, a support for said feed wheel pivotally mounted below the nozzle, means for driving said feed wheel in all positions of the support, and operator-controlled means for moving said support.

13. In an extruding machine, a nozzle, a feed wheel movable laterally toward and away from0 said nozzle, a movable support for said feed wheel, pivotally-mounted means for moving said support, and operator-controlled means resiliently connected with said pivotally mounted means for pressing said feed-wheel support to a predetermined limiting position and allowing' 16. In anextruding machine, a nozz1e,'a valve controlling said nozzle, a movably mounted feedwheel support, a feed wheel thereon, a stop for limiting the movement of said support toward work being presented to the nozzle, operatorcontrolled means resiliently connected to said support to move it toward the stop, and a lostmotion connection between said operator-controlled means and said valve.

17. In an extruding machine, a-nozzle, a weltsupporting flnger having a shank portion and an angularly related welt-engaging end` portion, and means for turning said finger around its shank to bring the end portion into engagement with the welt to support it against the nozzle.

18. In an extruding machine, a nozzle, a weltsupporting finger having a shank portion and an angularly related end portion, a movable support in which said shank portion is pivotally mounted, and means for moving said support constructed and arranged to impart to the weltsupporting finger a movement of rotation and of translation.

19. In a machine for applying a coating to welt shoes, an applying device, a welt-supporting member to hold the welt in coating relation to the applying device, said member having a shank portion and a work-contacting end lportion, and means for imparting to said member a movement of rotation about the axis of its shank portion and of translation toward and away from the applying device.

20. In an extruding machine, a nozzle, a weltsupporting finger having an angularly related welt-engaging end.portion,l and means for imparting movements of translation and of rota'- tion to said nger to bring the end portion into engagement' with a welt to hold it against said nozzle.

21. In -a shoe-coating machine for operating upon the bottoms of shoes to which a welt has been attached, an applying member adapted for engagement with the sole-engaging surface of the welt of a shoe, a driven feed wheel for engagement with the side of said shoe, and a finger having a welt-supporting end portion, said feed vwheel having a recess Von itsI upper face to receive a portion of said welt-supporting finger thereby permitting a closer relation between the feed wheel and the finger.

22. In an extruding machine for operating upon the bottoms of shoes to which a welt has been attached,'a depending nozzle adapted for engagement with the sole-engaging surface of the welt of an inverted shoe, a driven feed wheel for engagement with the side of said shoe, a weltsupporting finger, depending means for supporting said finger, a driven feed wheel for engagement with the side of the shoe, and means for supporting said feed wheel vior substantially straight line movement toward and away from the shoe.

23. In a-n extruding machine for operating upon the bottoms of shoes to which a welt has been attached, a depending nozzle adapted for engagement with the sole-engaging surface of the welt of an inverted shoe, a driven feed wheel for engagementwith the side of said shoe, a

finger having a welt-supporting end portion joined Vto an upwardly extending shank portion, said feed wheel having a recess on its upper face to receive a portion of said welt-supporting finger the end of the welt laterally under the nozzle without wiping the coating material on the end of the welt.

25. In an extruding machine for operating upon thebottoms of welt shoes, a depending nozzle, an operator-controlled shoe-engaging member, and means for imparting to said shoe-engaging member a combined motion of translation Y and rotation thereby to move said shoe with respect to the nozzle along a curved path to bring the end of the welt laterally beneath the end of the'nozzle.

26. In an extruding machine for operating upon the bottoms of welt shoes, a depending nozzle, a depending carrier having an angularly arranged terminal portion for engagement in the welt crease of the shoe, and operator-controlled means for imparting to said carrier a combined movement of translation and rotation thereby to bring-said terminal portion into the Welt crease and to push the-shoe laterally to move the end of the welt beneath the nozzle.

27. In an extruding machine, a nozzle, a valve controlling said nozzle, a movably mounted feedwheel support, and means for moving said support and for imparting an operating movement to said valve constructed and arranged to effect said movementsin predetermined timed relation. 28. In an extruding machine, a nozzle, a valve controlling said nozzle, -a movably mounted feedwheel support, and means for moving said feedwheel support and opening said valve constructed and arranged to bring the feed wheel into contact with the work before the valve is opened.

29. In an extruding machine, a nozzle, a valve controlling said nozzle, a feed-wheel, a Support therefor mounted for movement toward and away from said nozzle, and operator-controlled means for moving said feed-wheel support and operating said valve constructed and arranged to shut the valve before the feed wheel is carried away from the nozzle.

30. In an extruding machine, a nozzle, a valve controlling said nozzle, amovably mounted feedwheel support, a feed wheel thereon, a movably supported welt-crease-entering finger, and means for moving said finger and said support and operating said valve in a predetermined sequence.

31. In an extruding machine, a nozzle, a valve controlling said nozzle, a movably mounted feedwheel support, a feed wheel thereon, a movably supported welt-crease-entering finger, and means for moving said feed wheel support and said finger toward andV away from the work, said means being connected to said valve to operate it and being also constructed and arranged to bring the feed wheel and the nger into contact with the work before the valve is opened.

32. In an extruding machine, a nozzle, a valve controlling said nozzle, a movably mounted feedwheel support, a feed wheel thereon, a movably means being connected to said valve to operate it and being also constructed and arranged to close the valve before said wheel and linger are moved out of contact with the work.

33. In an extruding machine for operating upon the bottoms of welt shoes, a dependig nozzle, an operator-controlled movable finger for engagement in the welt crease, a movably supported operator-controlled feed wheel for engagement with the side of the shoe, and means for moving said finger and said feed wheel constructed and arranged to bring the finger substantially into operative position in the crease before the feed wheel contacts with the side of the shoe.

34. In an extruding machine for coating the bottoms of Welt shoes, a depending nozzle, a movably supported welt-creaseentering nger adapted to overlie the welt in a position beneath the nozzle, a valve for controlling said nozzle, and

means for moving said crease-entering finger into position and for opening said valve constructed and arranged to substantially complete the movement of the finger before the valve is opened.

35. In an extruding machine for coating the bottoms of welt shoes, a depending nozzle, a movably supported welt-crease-entering nger adapted to overlie the welt in a position beneath the nozzle, avalve for controlling said nozzle, a shoe-engaging feed roll mounted for movement toward and away from the shoe to a position substantially beneath said nozzle, and means for controlling the movements of said finger and feed roll constructed and arranged to open the valve after the Welt is interposed between the nozzle and the work-engaging parts.

36. In an extruding machine for coating the bottoms of shoes, a depending nozzle, a feed wheel for engagement with the shoe adjacent to the nozzle, a support in which said feed wheel is journaled movable laterally toward and away from the nozzle, means for driving said feed wheel in all positions of the support, operator controlled connections for moving the feed-wheel support to carry the feed wheel into engagement with the shoe, and resilient means interposed in said connections .z

37. In an extruding machine for coating the bottoms of shoes, a depending nozzle, a feed wheel for engagement with the side of a shoe presented to said nozzle, a feed-wheel support pivotally mounted in said machine to carry the feed wheel toward the nozzle into engagement with the shoe, means for`driving said feed wheel in all positions of the support, and operator controlled means for moving said support to carry the feedwheel into engagement with the side of a shoe.

33. In anV extruding machine for coating the bottoms of shoes, a depending nozzle, a feed wheel for engagement with the side of a shoe presented to said nozzle, a feed-wheel support pivotally mounted in said machine to carry the feed wheel toward the nozzle into engagement with the shoe, means for driving said feed wheel in all positions of the support, a treadle, and connections between said treadle and said feedwheel support embodying a resilient member thereby permitting the feed wheel to be moved into contact with the shoe and to yield to accommodate the varying contour of the side of the shoe.

y WILBUR L. MAOKENZIE.

CERTIFICATE CE CORRECTION. Y Patent No. 2,100,5h1. Y Nevember 5o, 1937.

' 7 .wILBUR L. MacKENzIE.

It is hereby certified that error apnears in the; printed specification of the above numbered patent requiring correction as followsz, Page 3, first column, line 3, strike out the word "lever"; page 6', second column, line 5l, for "rigid" read ridged; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the cada 1n the Pateneoffice.

Signed and sealed this 1st day of Merch, A.. D. 1958.

Henry Ven Arsdale., (Seal) Acting Commissioner 'of Patents. 

